.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.49.3.
.TH NAUTY-DELPTG "1" "April 2024" "nauty 2.8.8" "Nauty Manual"
.SH NAME
nauty-delptg \- delete vertices
.SH SYNOPSIS
.B delptg
[\fI\,-lq\/\fR] [\fI\,-a|-b\/\fR] [\fI\,-d#|-d#:#\/\fR] [\fI\,-v#|-v#:#\/\fR] [\fI\,-r#\/\fR] [\fI\,-n#\/\fR] [\fI\,-m#|-i\/\fR] [\fI\,infile \/\fR[\fI\,outfile\/\fR]]
.SH DESCRIPTION
.IP
Delete some vertices from a file of graphs.
.IP
The output file has a header if and only if the input file does.
No isomorph reduction is done.
.TP
\fB\-l\fR
Canonically label outputs
.HP
\fB\-d\fR# \fB\-d\fR#:# Only remove vertices with original degree in the given range
.IP
For digraphs, the out\-degree is used.
.HP
\fB\-n\fR# The number of vertices to delete (default 1).
.HP
\fB\-v\fR# \fB\-v\fR#:# Vertex number or numbers that it is allowed to delete
.IP
(the first vertex is number 0).
.HP
\fB\-m\fR# Lower bound on minimum degree of output graphs.
.HP
\fB\-r\fR# Choose # random sets of points (not necessarily different)
.TP
\fB\-a\fR
The deleted points must be adjacent.
.TP
\fB\-b\fR
The deleted points must be non\-adjacent.
.TP
\fB\-i\fR
Leave deleted vertices as isolates, not compatible with \fB\-m\fR.
.IP
No empty graphs are output. No warning is issued if
.IP
\fB\-d\fR, \fB\-v\fR \fB\-n\fR, \fB\-m\fR together imply no graphs are output.
.IP
For digraphs, out\-degree is used for \fB\-d\fR and \fB\-m\fR.
\fB\-q\fR  Suppress auxiliary information